Before generation
Use before starting a STEM target or assigning support to check whether evidence exists for essential prerequisites across more than one source. The workbench separates score threshold from evidence diversity and exposes conflicting readiness labels. It does not diagnose an individual, infer causality, select an intervention, validate an assessment, predict success, or turn one recent score into permanent mastery.
Worked example
Linear systems has equation-solving and ordered-pair evidence from quiz and interview sources. Both essential percentages reach 75 percent, so ready is supported. Projectile modeling has vector evidence above threshold but graph reading below it, so review is supported. Review source variety has strong results on both prerequisites but only one source type, making its ready claim unsupported.
Formula or methodology
For each row, percentage equals correct divided by attempted times 100. Group rows by target. Readiness requires at least one prerequisite marked essential, every essential prerequisite at or above the declared percentage threshold, and at least the declared number of unique normalized source labels. Every repeated target claim must agree with this combined result.
How to interpret the result
Supported means the readiness label follows the entered threshold, essential designations, and source rule. It does not mean every learner is ready or that a prerequisite is instructionally necessary. Review item alignment, sample size, opportunity to learn, recency, independence, misconceptions, accommodations, language demands, confidence, and consequences with qualified educators before revising a pathway.
Common mistakes
Do not average away a failed essential prerequisite, count two forms of the same quiz as independent sources without justification, mark every skill essential, compare unequal tasks as equivalent, use tiny attempted counts without uncertainty, or treat a threshold as a diagnosis. Preserve row evidence, define the target and source rule, and inspect actual learner reasoning.